DR. MARK DONALD FLEMING MD
NPI 1841255932
Surgery - Vascular Surgery in Sioux Falls, SD
About Dr. Mark Donald Fleming Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK DONALD FLEMING MD (NPI 1841255932) is an individual vascular surgery provider in Sioux Falls, South Dakota, licensed in South Dakota (14037) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Spencer Municipal Hospital, and maintains a secondary practice location in Lexington.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Mark Donald Fleming Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
5Medicare enrollment records show Mark Fleming reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Sioux Falls, SD 57108
- Reassigned Medicare billing, Iowa and South Dakota enrollments
- 34 clinicians in this Medicare group
Hawarden, IA 51023
- Reassigned Medicare billing, Iowa enrollment
- 40 clinicians in this Medicare group
Hawarden, IA 51023
- Reassigned Medicare billing, Iowa enrollment
- 37 clinicians in this Medicare group
Eden Prairie, MN 55344
- Reassigned Medicare billing, Wisconsin enrollment
- 530 clinicians in this Medicare group
Lexington, KY 40517
- Reassigned Medicare billing, Kentucky enrollment
- 1,502 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 42
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Spencer Municipal Hospital
Acute Care Hospitals · Spencer, IALakes Regional Healthcare
Acute Care Hospitals · Spirit Lake, IAPrairie Lakes Healthcare System, Inc
Acute Care Hospitals · Watertown, SDAvera Mckennan Hospital & University Health Center
Acute Care Hospitals · Sioux Falls, SDAvera Heart Hospital Of South Dakota
Acute Care Hospitals · Sioux Falls, SDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 57108 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SIOUX FALLS, SD 57108
SIOUX FALLS, SD 57108
SIOUX FALLS, SD 57108
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Mark Fleming's NPI number?
The NPI number for Mark Fleming is 1841255932. It was assigned to this individual provider in the NPPES registry on April 20, 2006.
Where is Mark Fleming located?
Mark Fleming practices at 4520 W 69th St, Sioux Falls, SD 57108. The listed phone number is (605) 977-5000.
What is Mark Fleming's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Vascular Surgery, with taxonomy code 2086S0129X.
Is Mark Fleming enrolled in Medicare?
Yes. Mark Fleming is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Mark Fleming's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Fleming reassigns Medicare benefits to 5 organizations: Heart Hospital Of South Dakota LLC (Sioux Falls, SD), Hawarden Regional Healthcare Clinics LLC (Hawarden, IA), Hawarden Regional Healthcare (Hawarden, IA), Allina Health System (Eden Prairie, MN) and Kentucky Medical Services Foundation, Inc (Lexington, KY). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mark Fleming's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Fleming accept?
Health plans from Ambetter Health, Ambetter from Sunflower Health Plan, Avera Health Plans, Medica and Oscar Health and 3 other insurers list Mark Fleming as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Mark Fleming affiliated with any hospitals?
According to CMS data, Mark Fleming is affiliated with Spencer Municipal Hospital, Lakes Regional Healthcare, Prairie Lakes Healthcare System, Inc, Avera Mckennan Hospital & University Health Center and Avera Heart Hospital Of South Dakota.
When was this NPI record last updated?
The NPPES record for Mark Fleming was last updated on July 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.